#include <stdio.h>

int main() {
    int year, month, day;
    scanf("%d %d", &year, &month);
    switch(month) {
        case 1:
        case 3:
        case 5:
        case 7:
        case 8:
        case 10:
        case 12: day = 31; break;
        case 4:
        case 6:
        case 9:
        case 11: day = 30; break;
        case 2: {
            day = 28;
            if ((year % 4 == 0 && year % 100 != 0) || 
                    (year % 400 == 0)) {
                day = 29;
            }
            break;
        }
        default: printf("Error!");
    }

    printf("year = %d, month = %d, day = %d\n", year, month, day);
    return 0;
}
